Hay-stacker.



B. HODGMAN.

HAY- STAGKER.

APPLICATION IiLED APR. 18. 1913.

Patented Mar. 9

5 SHEETS-SHEET 1.

wue/wtoz [frame fidyman/ THE NORRIS PETERQ 00., PflOmLli'HOq WASHINQTUN.D4 C.

B. HODGMAN.

HAY STAOKBR.

APPLICATION FILED APRl8, 1913.

1,131,518. Patented Mar. 9, 1915.

6 SHEETS-SHEET 2.

amen W01 affovnw HE NORRIS PETERS 0-. PHOID-LITHQ. WASHINGTON. D. C.

B. HODGMAN. HAY STAGKBR.

APPLICATION FILED APRJB, 1913. 1,131,518.

Patented Mar. 9, 1915.

5 SHEETSSHEET 3.

fimce ffodymaw THE NORRIS PETERS 60., PHOTO-LITHO.. WASHINGTON. D. C

B. HODG'MAN.

HAY STAGKER.

APPLIOATION FILED APB-.18, 191s.

Patented Mar. 9, 1915.

6 SHEETS-SHEET 4.

THE NORRIS PETERS c0 PHOTO-LITHQ, WASHING mN, D. C.

Patented Mar. 9

6 SHEETS-sun's.

NORRIS PETERS ca. FHOTO-LITHO.. WASHINGTON, D. C.

BRUCE HODGMAIN, 01E SHOSHONE, IDAHO.

HAY-STAGKER.

Application filed April 18, 1913.

T 0 all whom it may concern Be it known that I, BnUon HODGMAN, a citizenof the United States, residing at Shoshone, in the county of Lincoln andState of Idaho, have invented new and useful Improvements inHay-Stackers, of which the following is a specification.

This invention relates to hay stackers, and it has particular referenceto that class of stackers in which a portable derrick is employed forthe purpose of raising the load of hay and depositing it on the stack.

One object of the invention is to produce a simple and efiicientportable derrick which may be readily transported from place to placeand set up for operation and which shall be simple in construction andefiicient in operation.

A further object of the invention is to produce a derrick in whichsimple and efficient means are provided, to operate in connection withthe hoisting apparatus for swinging the derrick arm or boom from theload receiving point to the point where the load is to be dropped ordeposited.

A further object of the invention is to produce a simple and eflicientconstruction whereby the derrick boom or arm, after the load has beendropped or deposited will gravitate to the initial or load receivingposition.

A still further object of the invention is to simplify and improve theconstruction, arrangement and operation of the detailed parts of theinvention.

\Vith these and other ends in view which will readily appear as thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claims.

In the accompanying drawings has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theclaims may be resorted to when desired.

In the drawings,Figure 1 is a side elevation of a hay stackerconstructed in accordance with the invention. Fig. 2 is a top plan viewof the same. Fig. 3 is a detail view in rear elevation and on a largerscale of the derrick mast and related parts.

Specification of Letters Patent.

7 Patented Mar. 9, 1915..

Serial No. 762,088.

Fig. 4 is a rear elevation on a still larger scale of the top of themast and related parts. Fig. 5 is a side elevation of the parts shown inFig. i. Fig. 6 is a rear elevation, partly in section, of a portion ofthe mast showing the boom adjusting means. Fig. 7 is a side elevation ofthe parts shown in Fig. 6. Fig. 8 is a side elevation of the hoistingapparatus. Fig. 9 is a plan view of the hoisting apparatus, the frame orcasing of the same being shown in section. Fig. 10 is an end view of thehoisting apparatus, the derrick arm being shown in section. Fig. 11 is aview in side elevation of the free end or exterior of the derrick arm.Fig. 12 is a plan view illustrating a niodi fication of the hoistingapparatus.

Corresponding parts in the several figures are denoted by likecharacters of reference.

A rectangular base frame A is provided, said frame including front andrear sills 15, 15 which are in the nature of runners that permit theframe and related parts to be moved conveniently from one position toanother. A mast 16 rising from the rear sill is provided with arearwardly extending bracket 17 which is connected by braces 18 with thefront corners of the base frame; inclined braces 19 connect the rearcorners of the frame with the mast. In this man ner a frame structure isprovided whereby the mast is firmly supported in such a manner that itmay be conveniently moved without necessity for demounting.

At a convenient point near the lower end of the mast 16 is mounted abracket plate 20 having a step or offset 21 and provided with sleeves 22affording bearings for a vertically disposed pintle 23 having a conicalpointed lower end which is supported on the step 21. The pintle 23 hasan arm 24: which extends forwardly intermediate the sleeves 22, said armserving to support the derrick arm or boom 13 which is connectedtherewith by a substantially horizontal pivot member 25, the latterbeing disposed in a plane substantially at right angles to the pintle23. The boom comprises a core member 26 preferably of tubularconstruction, the same being provided at intervals with strut frames 27supporting the truss members 28, which latter may consist of cables,rods or wires and for the terminal attachment of which sleeves 29 areprovided near the respective ends of the boom, one of said sleeves beingplainly seen in Fig.

11. Said figure also illustrates a cap bracket 30 mounted on the freeend of the boom, said bracket serving to support a sheave 31 having anauxiliary guide pulley 32, and said cap bracket being also provided witha clevis 33 for the attachment of the flexible adjusting element orcable 34.

A frame 35, see Fig. 6, which is mounted near the lower end of the mastsupports a revolving drum 36, the shaft of which 37 carries a spur wheel38 meshing with a pinion 39 on a shaft 40 which is likewise mounted onthe frame 35. The shaft 10 has an operating crank 11 in the path ofwhich a pivoted stop member is arranged, said stop member consisting ofa lever having a weighted arm 42 which is guided in a keeper 43 andwhich normally gravitates in the path of'the crank so as to obstructrotation of the latter, the other arm 4: 1 of the lever being connectedby a flexible element, such as a cord 45, which is guided over a pulley16 with a treadle 17 by means of which the lever may be actuated to movethe weighted arm42 out of the path of the crank 41. The rope or cable 34which constitutes the boom adjusting element is guided over a pulley 36carried by the bracket 17, and it is terminally connected with and woundupon the drum 36, and it will be readily understood that by winding saidcable upon or unwinding it from the drum 36, the free end of the boommay be raised or lowered and supported at various elevations.

The upper end of the mast supports a frame 48 including a top memberwhich has been shown'as being composed of a spacing sleeve 49 throughwhich a bolt or rod 50 extends. A slide 51 mounted on and movable uponthe sleeve or top member 49 carries a pulley 52 over which the adjustingand supporting cable 3 1 is guided. Flexible elements 53 which aresuitably connected with theslide 51 are guided over pulleys 54 supportedon the sides of the frame 48, and said flexible elements are terminallyattached 1 to and connected with the arms of a lever 55 which isfulcrumed on the mast 16, said lever being capable of being secured atvariousadjustments by suitable means, such as a pin 56, extendingthrough one arm of the leverrand through one of a plurality ofperforations 57 in a plate or bracket 58 secured on the mast." It willbe seen that by means of the lever 55 the slide 51 carrying the pulley52 may be moved longitudinally of the top member 49 of the frame 48,which latter, as will be seen, is disposed transversely of the mast. Theguide pulley 52 may thus be positioned and maintained in a position inthe medial vertical plane of the mast or to either side of said plane.

It will be readily understood that-when the machine is set up foroperation with the mast in an approximately vertical position,

and assuming the guide pulley 52 to be supported in a medial positionwith respect to the mast and the frame 48, the tendency of the boom willbe to gravitate to a certain position. Let the slide 51 carrying theguide pulley 52 be shifted or moved to either side of this normal ormedial position, it is evident that the ad usting and supporting elementSet will exert a stress on the free end of the boom, whereby the latterwill have a tendency to swing in the direction in which the pulleycarrying slide has been moved, said swinging movement continuing untilthe free end of the boom finds its level or is otherwise checked.checking this movement, a check rope 59 is provided, said check ropeconnecting the boom with one of the diagonal braces 18 of the framestructure, and said check rope being of such length that it will preventthe boom from swinging into contact with the frame in one direction. Asecond check rope 60 is provided for the purpose of limit- 7 ing thelateral swinging movement of the boom in the opposite direction, itbeing readily understood that one or both of said check ropes are at alltimes slack according to the position of the boom. By proper adjustmentof the check rope 59 it is obvious that the drifting or gravitatingmovement of the boom may be checked at various points, and the point atwhich it is thus checked will be known as the load receiving position.It is obvious that when the pulley carrying slide 57 is moved to theopposite side of the medial line to that shown in Fig. 2, the loadreceiving position will be determined by the check rope 60.

The hoisting apparatus includes a frame or casing 6lwhich is suitablymounted or supported on the boom and which supports pulleys or sheaves62, 63 over which the hoisting element or cable 64k is guided, one endof said hoisting element or cable being connected with the source ofpower, not shown. The other end of the hoisting element is guided overthe pulley in the sheave 31 at the free end of the boom, and it carriesa fork or other load carrying member 65 which may be actuated by a triprope 66. Slidably supported on'the shaft 67 which carries the guidepulley 62 is a drum 68 having clutch members 69 adapted to engage matingclutch members 7 0 on the guide pulley 62. The drum is operated by ashipping lever 71 which is connected by a spring 72 with an arm orbracket 7 3 extending from the frame 61, the tension of said spring be-E ing exerted to iorce the drum 681nto locking engagement with the guidewheel 62. A flexible element, such as a rope 74:, is ad- ]ustablyconnected with the shipping lever 71 by means of a clamping device 75,and said rope is guided over a pulley 76 carried by an arm or bracket 77111 an outward d1- For the purpose of rection toward the free end of theboom, said rope being guided over the auxiliary guide pulley carried bythe sheave 31 and provided with a weight 78 which is sufiiciently heavyto overcome the tension of the spring 72, so that said weight will serveto maintain the pulley 6S normally disengaged from the guide wheel 62.The weight 78 is located in the path of the load carrying element 65 atan elevation which is determined by the adjustment of the rope 74: withrespectto the shipping lever 71 by means of the 0 amp 75. When the loadcarrying element 65 ascends, it will engage the weight 78 and lift thelatter, thus permitting the tension of the spring 71 which is now nolongeropposed by said weight to actuate the shipping lever 71 to placethe drum 68 in looking engagement with the guide wheel Suitablyconnected With the drum 68 is one end or" a flexible element, such as arope T9, the other end of which is connected with a fixed point, such asasuitably located stake 80, said rope being guided over a guidingelement, such as a pulley 81, connected .vith the boom. The rope 79 isprovided intermediate the pulley 81 and the stake with a weight 82,whereby it is tensioned and which, at the proper time serves to unwindthe rope 79 from the drum 68, as will be presently seen. The drum 68 hasbeen shown as being provided with a guiding wedge 83, whereby the secondwhirl of the rope 79 will be guided into position adjacent to the firstwhirl when the drum is rotated to wind the rope.

is the operation of this device, when the boom is in load receivingposition where it is held by the check rope 59, the load carryingelement 65 is lowered for the purpose of taking the load, the loweringbeing effected by relaxing the pulling strain on the hoisting element Gl. When the load has been grasped, pulling strain is applied to thehoisting element G l with the effect of lifting the element until itstrikes the weight 78 which, being thereby lifted, relaxes the strain onthe rope 74, thereby causing the drum 68 to be thrown into lockedengagement with the uide wheel 62 by the tension of the spring 72. Thepulley 62, it will be understood, is being rotated by frictional contactwith the hoisting element 64:, and the drum 68 will thus be rotated, andthe rope 79 will be wound thereon, thereby causing the boom to swing inthe direction of the stake 80 with which said rope 7 9 is connected.lVhen the proper place has been reached for discharging the load, thepulling strain on the hoisting element 64 is interrupted, and the loadmay be dropped bv manipulating the trip rope 66 or in any otherconvenient manner. By relaxing or releasing the strain on the hoistingelement 64, the load carrying element will descend by gravity, therebypermitting the weight 7 8 to drop and overbalance the tensional force ofthe spring 72, thereby actuating the shipping lever 71 to throw the drum68 out of locking engage- V ment with the guide wheel 62. The rope (9will now become unwound from the drum 58 by the tension exerted by theweight 8:3, thus releasing the boom and permitting it to drift orgravitate to the initial load receiving position.

In the figures oi the drawings the boom has been shown as being arrangedto drift or gravitate to the right with respect to the mast as viewed bya person standing in front thereof.

When the direction of the load carrier is to be reversed it is necessaryonly to change the point of attachment of the rope 79 from one side ofthe mast to the opposite side and to shift the slide 51 correspondingly.

Under the modification illustrated in Fig. 12 the drum, here designated68, is normally kept out of locking engagement witl the guide wheel 62by the tension of the spring 72 actuating the shipping lever 71. Theweight 78 is dispensed with, but a rope 742- which is guided over thepulley 76 is guided over another pulley 83 connected with the boom, asshown in Fig. 1, and the free end of said rope is permitted to dependwithin reach of the operator who, by pulling the aine, may throw theshipping lever 71 against the tension of the spring 72, thus throwingthe drum 68' into gear.

For the purpose of sustaining the apparatus and especially the mast inproper position for cooperation, suitable supporting members may beprovided, such as guy ropes, some of which have been indicated by 85.

It will be seen from the foregoing that I have provided a very simpleand efficient stacking apparatus which is largely automatic in itsoperation and which has been found to be thoroughly useful andeffective.

The apparatus is constructed in such a manner that it may be readilydemounted or disassembled for the purpose of transportation from placeto place, and for the transportation thereof a carrying truck of simpleconstruction may be provided.

Having thus described the invention, what is claimed as new, is

1. In a hoisting apparatus of the class described, a mast, ZL'bOOIY).pivotally connected therewith, a flexible supporting element connectedwith the free end of the boom, a horizontally disposed sleeve at theupper end of said mast; and a laterally adjustable pulley slidablymounted on said sleeve over which said supporting element is guided, thesaid pulley throwing the intermediate portion of said flexiblesupporting element out of the same vertical plane with its extremities.

2. In a hoisting apparatus of the class described, a mast, a boompivotally connected therewith, a flexible supporting element connectedwith the free end of the boom, a horizontally disposed sleeve at theupper end of said mast, a laterally adjustable pul ley adjustablymounted on said sleeve over which said supporting element is guided forthrowing the intermediate portion of the flexible supporting element outof the same vertical plane with its extremities, and flexible means foradjusting the pulley transversely with respect to the mast and forsecuring it in adjusted position.

3. 111 a hoisting apparatus of the class described, a mast, a boompivotally connected therewith, a flexible supporting element connectedwith the free end of the boom, a sleeve disposed transversely at theupper end of said mast, a slide adjustably mounted on said sleeve andcarrying a guide pulley over which the supporting element is guided, andmeans for adjusting the slide and then securing it in adjusted positionfor throwing the intermediate portion of said flexible element out ofthe same vertical plane with its extremities.

i. In a hoisting apparatus of the class described, a mast, a boompivotally connected therewith, a winding drum, a flexible supportingelement connecting the winding drum with the free end of the boom, anadjustable pulley for the flexible supporting element including a slideand a slide rest disposed transversely with respect to the mast andcarried by said mast near the upper end thereof for throwing theintermediate portion of said flexible supporting element out or" thesame vertical plane with its extremities.

In a hoisting apparatus of the class described, a mast, a boom pivotallyconnected therewith to swing laterally, a flexible supporting elementfor the boom, a laterally adjustable guided element over which thesupporting element is guided, a check member to limit lateral driftofthe boom, means for swinging the boom laterally in a direction oppositeto that in which it normally drifts by gravitation, said means includinga winding drum and a flexible element having one extremity connected tosaid drum and the remaining extremity connected to a stationary support,means for rotating the winding drum including a load carrier hoistingelement, a pulley over which said hoisting element is guided, and matingclutch members on the pulley and the winding drum, and means for movingthe winding drum to place it into or out of locking engagement with theguide pulley.

6. In a hoisting apparatus of the class described, a mast, a boompivot-ally connected therewith, means for supporting the boom forlateral drifting movement, a check element to limit the lateral drift ofthe boom, means for swinging the boom laterally in a direction oppositeto that in which it normally drifts by gravitation, said means includinga winding drum, and a flexible element connected at one extremity to thedrum and to a stationary support at its opposite extremity, means foractuating the Winding drum including a load carrier hoisting element,guide pulleys over which said hoisting element is guided, and means forplacing the winding drum into and out of engagement with the guidepulleys, said means including a spring actuated shipping lever, asuitably guided flexible element connected with the shipping lever andcarrying a counterweight overbalancing the tension of the spring, and aload carrying. element connected with the hoisting element and in thepath of which said counterweight is located.

In testimony whereof I aiiix my signature in presence of two witnesses.

BRUCE HODGMAN.

*Witnesses:

SETH R. SrooKToN, NroHoLAs B. BUGKLER.

Copies of this patent may be obtalnedfor' five cents each, by addressingthe Commissioner of Eatents.

Washington, D. C.

